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Advice on right size for new variable speed pump


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Belated Merry Christmas!

Newbie here replacing an old single speed pentair pump with a new variable speed model and I want to make sure I get the "right" size.  I've read conflicting information about not buying a too powerful motor.  I certainly don't want to overspend if I don't have to.  Also it's near impossible for me to calculate the head based on what I've read on the information I need to do so.  Best I have to go off of is the existing pump model I'm replacing.  It's a 1.5 HP, 3450 RPM, 230V Pentair (7-177451-03 / E44549).  My in-ground pool is 21,000 gallons as best I can calculate with 2" pipes coming in and out of pump.  Any advice on what approach to take in getting a "right" sized variable speed pump replacement would be very much appreciated.  Thank you!

Jason

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  • 4 weeks later...

Hi Jason, 

The Pentair SuperFlo VS 1.5HP Variable Speed Pool Pump (SKU 342001) is the same HP as the single-speed pump you are looking to replace. It's compatible with 115/230V with no need to upgrade existing wires. More specs are available here: https://www.epoolsupply.com/products/pentair-superflo-vs-1-5hp-variable-speed-pool-pump-342001 

Our team is also happy to answer any questions you have about finding the right size pump for your pool, feel free to contact us anytime. 

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